Color

#0d30af

#0d30af
hex#0d30af
rgbrgb(13, 48, 175)
hslhsl(227, 86%, 37%)
oklchoklch(0.391 0.202 264.9)
Closest name: Blue Hour (#0034ab)Relative luminance 0.0529

Colors that go with #0d30af

Charcoal, Steel Blue and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#af8c0d

#0d82af · #3b0daf

#af0d30 · #30af0d

Split-complementary

Open in tool →

#af3b0d · #82af0d

#af0d82 · #af8c0d · #0daf3b

Contrast

#0d30af as textRatioAAAA largeAAAFix
Aaon white
10.2:1passpasspassPasses AAA — no fix needed.
Aaon black
2.06:1failfailfail
  • AA: use #466bf1 as the text (4.63:1)
  • AAA: use #7591f5 as the text (7.13:1)
  • AA: or shift the background to #adadad (4.54:1)
  • AAA: or shift the background to #d6d6d6 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d30af as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#0d30af reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d30af
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #0d30af and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d30af-9ca0c4-df7a4e-221f2d-e9eff1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md